Article
Meteorology & Atmospheric Sciences
Weiqi Xu, Zhijie Li, Zhiqiang Zhang, Jinjian Li, Eleni Karnezi, Andrew T. T. Lambe, Wei Zhou, Jiaxing Sun, Aodong Du, Ying Li, Yele Sun
Summary: This study characterized the changes in physicochemical properties of organic aerosol (OA) during photochemical aging using burning and cooking experiments. The mass spectra of OA showed significant changes during aging, indicating the production of more volatile secondary OA. Additionally, the size distributions, volatility, and glass transition temperature of OA varied during aging for different primary emissions.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Meteorology & Atmospheric Sciences
Weiqi Xu, Zhijie Li, Zhiqiang Zhang, Jinjian Li, Eleni Karnezi, Andrew T. Lambe, Wei Zhou, Jiaxing Sun, Aodong Du, Ying Li, Yele Sun
Summary: This study investigated the changes in size distributions, volatility, and glass transition temperature (T-g) of organic aerosols during photochemical aging of primary emissions from burning and cooking. The results showed the formation of secondary organic aerosols (SOA) with higher volatility below 150 nm after aging. The aging emissions from biomass burning and coal combustion had lower volatilities and higher viscosities, while the aging cooking emissions had decreased T-g. These findings demonstrate that the physicochemical properties of aerosols can undergo significant changes in a matter of days, which can have different impacts on climate and health.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Environmental Sciences
Xiaochen Tang, Noelia Ramirez Gonzalez, Marion L. Russell, Randy L. Maddalena, Lara A. Gundel, Hugo Destaillats
Summary: This study evaluates the chemical changes in thirdhand smoke aerosols induced by high levels of ozone, showing the potential of ozone to remove harmful chemicals from indoor surfaces. However, ozone treatment also results in the generation of harmful gases and ultrafine particles as byproducts.
ENVIRONMENTAL RESEARCH
(2021)
Article
Energy & Fuels
Ramon Arcas, Drialys Cardenas-Morcoso, Maria Chiara Spadaro, Miguel Garcia-Tecedor, Camilo A. Mesa, Jordi Arbiol, Francisco Fabregat-Santiago, Sixto Gimenez, Elena Mas-Marza
Summary: This study discovered a significant enhancement in photocurrent when exposing BiVO4 photoanodes to light-aging treatments, which is associated with the formation of oxygen vacancies. Chemical segregation of Bi species toward the surface and the formation of intra-bandgap states associated with oxygen vacancies were demonstrated. These states were proven to be photoactive, generating photocurrent under infrared excitation.
Article
Agriculture, Dairy & Animal Science
Amr Abd El-Wahab, Richard Grone, Volker Wilke, Marwa F. E. Ahmed, Bussarakam Chuppava, Christian Visscher, Josef Kamphues
Summary: This study aimed to investigate the physio-chemical properties of wheat, hybrid rye, and barley, and found significant differences in particle size distribution at different screen sizes. Hybrid rye had the largest particles >1.0 mm, while wheat had the lowest water holding capacity. Additionally, hybrid rye exhibited high extract viscosity compared to wheat and barley.
ITALIAN JOURNAL OF ANIMAL SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Fredrick Kim, Seong Eun Yang, Hyejin Ju, Seungjun Choo, Jungsoo Lee, Gyeonghun Kim, Soo-ho Jung, Suntae Kim, Chaenyung Cha, Kyung Tae Kim, Sangjoon Ahn, Han Gi Chae, Jae Sung Son
Summary: Microscale three-dimensional thermoelectric architectures can be fabricated through direct writing of particle-based thermoelectric inks, producing microthermoelectric generators with high power density.
NATURE ELECTRONICS
(2021)
Article
Multidisciplinary Sciences
Vahe J. Baboomian, Giuseppe Crescenzo, Yuanzhou Huang, Fabian Mahrt, Manabu Shiraiwa, Allan K. Bertram, Sergey A. Nizkorodov
Summary: The viscosity of secondary organic aerosol (SOA) can increase significantly after exposure to UV radiation, potentially leading to increased abundance of aerosols and formation of ice clouds in the atmosphere. This has important implications for air quality, climate prediction, and Earth's energy budget.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Engineering, Environmental
Jienan Li, Daniel A. Knopf
Summary: The reactivity of organic aerosol (OA) towards OH oxidation is strongest with temperature when the organic species is in the liquid phase. By using the resistor model, the physicochemical parameters of the temperature dependent OH uptake process can be evaluated, allowing for the prediction of the degree of oxidation and chemical lifetime of the condensed-phase organic species under typical tropospheric conditions when OA particle viscosity is known.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Lucia Caudillo, Birte Rorup, Martin Heinritzi, Guillaume Marie, Mario Simon, Andrea C. Wagner, Tatjana Mueller, Manuel Granzin, Antonio Amorim, Farnoush Ataei, Rima Baalbaki, Barbara Bertozzi, Zoe Brasseur, Randall Chiu, Biwu Chu, Lubna Dada, Jonathan Duplissy, Henning Finkenzeller, Loic Gonzalez Carracedo, Xu-Cheng He, Victoria Hofbauer, Weimeng Kong, Houssni Lamkaddam, Chuan P. Lee, Brandon Lopez, Naser G. A. Mahfouz, Vladimir Makhmutov, Hanna E. Manninen, Ruby Marten, Dario Massabo, Roy L. Mauldin, Bernhard Mentler, Ugo Molteni, Antti Onnela, Joschka Pfeifer, Maxim Philippov, Ana A. Piedehierro, Meredith Schervish, Wiebke Scholz, Benjamin Schulze, Jiali Shen, Dominik Stolzenburg, Yuri Stozhkov, Mihnea Surdu, Christian Tauber, Yee Jun Tham, Ping Tian, Antonio Tome, Steffen Vogt, Mingyi Wang, Dongyu S. Wang, Stefan K. Weber, Andre Welti, Wang Yonghong, Wu Yusheng, Marcel Zauner-Wieczorek, Urs Baltensperger, Imad El Haddad, Richard C. Flagan, Armin Hansel, Kristina Hoehler, Jasper Kirkby, Markku Kulmala, Katrianne Lehtipalo, Ottmar Moehler, Harald Saathoff, Rainer Volkamer, Paul M. Winkler, Neil M. Donahue, Andreas Kuerten, Joachim Curtius
Summary: Experimental studies of alpha-pinene oxidation were conducted to investigate the chemical composition of gas and particle phases, revealing the presence of major compounds such as C8-10 monomers and C18-20 dimers. Addition of isoprene led to the detection of C-5 and C-15 compounds in the particles, which potentially contribute to particle growth under free tropospheric conditions.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Robert Chrostowski, John F. F. Curry, Michael T. T. Dugger, Nicolas Molina, Tomas F. F. Babuska, Hugo Celio, Andrei Dolocan, Filippo Mangolini
Summary: Molybdenum disulfide (MoS2) coatings are widely used in industrial applications for their excellent lubricating properties. However, the aging process of MoS2 under ambient conditions has led to reliability issues as the interfacial shear strength increases. The relative role of water and oxygen in the aging mechanism of MoS2 is still not well understood, and the impact of thermally- and tribologically-induced microstructural variations on aging is also unclear. In this study, three analytical techniques were employed to investigate the aging phenomena and structural changes of MoS2 coatings, providing valuable insights into the aging mechanisms and their dependence on environmental conditions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Environmental Sciences
Hang Liu, Xian Zhang, Bin Ji, Zhimin Qiang, Tanju Karanfil, Chao Liu
Summary: This study investigates the effects of UV aging on the chlorine reactivity, chemical transformation, and formation of disinfection byproducts (DBPs) of six microplastic (MP) polymers. The results show that UV aging enhances the destruction of functional groups of the polymers and promotes the release of organic compounds. Additionally, UV-aged MP polymers produce significantly higher yields of DBPs compared to their virgin counterparts. Overall, UV aging increases the reactivity and chemical transformation of MP polymers during chlorination, resulting in the release of polymer monomers, oligomers, and additives, and exacerbating their role as DBP precursors.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Physical
Marco Simoni, Theodore Hanein, Chun Long Woo, Mark Tyrer, Magnus Nyberg, Juan-Carlos Martinez, Nestor I. Quintero-Mora, John L. Provis, Hajime Kinoshita
Summary: This study presents a new process for decarbonising CaCO3 under ambient conditions and sequestering CO2. The results show that lower stirring rates and longer residence times enhance the reaction efficiency. Mass balance analysis reveals that up to 95% of the CO2 embodied in CaCO3 can be sequestered, with a maximum capture rate achieved.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Environmental Sciences
Long Jia, YongFu Xu
Summary: The study developed a novel CSVA model to simulate the gas-phase and particle-phase reactions of SOA as well as the evolution of particle size distribution.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Roberto Matassa, Maria Sofia Cattaruzza, Filippo Sandorfi, Ezio Battaglione, Michela Relucenti, Giuseppe Familiari
Summary: The research found that cigarettes contain heavy metal-inorganic nano micro particles, and poorly designed filters may collect potentially harmful chemicals, forming a hazardous sponge. Experimental evidence shows that hazardous particles form large agglomerates due to the heating puffing effect during smoking.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Jani Leskinen, Anni Hartikainen, Sampsa Vaatainen, Mika Ihalainen, Aki Virkkula, Arunas Mesceriakovas, Petri Tiitta, Mirella Miettinen, Heikki Lamberg, Hendryk Czech, Pasi Yli-Pirila, Jarkko Tissari, Gert Jakobi, Ralf Zimmermann, Olli Sippula
Summary: In this study, the particle size dependency of the effective density (peff) was investigated for different types of particles from residential combustion and an aerosol standard burner. It was found that peff significantly increased due to photochemical aging, especially for larger soot agglomerates. The increase can be explained by the collapsing of chain-like agglomerates, filling of voids, and formation of secondary coating.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Omid Ghaffarpasand, Karl Ropkins, David C. S. Beddows, Francis D. Pope
Summary: It is found that only a small proportion of vehicles in a fleet emit a large amount of air pollutants. Therefore, targeted actions towards these highly polluting vehicles could greatly improve air quality. This paper proposes a new approach using enrichment factor in cumulative Pareto analysis to detect high-emitting vehicle subsets within a fleet. The study analyzes a large dataset from five UK-based field campaigns and assesses the contributions of these high-emitting vehicle subsets to the total fleet emissions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Karsten Baumann, Marco Wietzoreck, Pourya Shahpoury, Alexander Filippi, Stefanie Hildmann, Steven Lelieveld, Thomas Berkemeier, Haijie Tong, Ulrich Poeschl, Gerhard Lammel
Summary: The redox-active substances in fine particulate matter (PM) can generate reactive oxygen species in epithelial lung lining fluid (ELF), which pose inhalation health risks. The air-liquid interface (ALI) in the ELF plays a crucial role in the phase transfer and multi-phase reactions of redox-active PM constituents. Our study investigated the influence of interfacial processes and properties on the oxidative potential (OP) of PM components and found that the OP can exceed that resulting from bulk mixing, suggesting that OP measurements based on bulk mixing may not accurately represent the effective OP in the human lung.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Marin Kuntic, Ivana Kuntic, Roopesh Krishnankutty, Adrian Gericke, Matthias Oelze, Tristan Junglas, Maria Teresa Bayo Jimenez, Paul Stamm, Margaret Nandudu, Omar Hahad, Karin Keppeler, Steffen Daub, Ksenija Vujacic-Mirski, Sanela Rajlic, Lea Strohm, Henning Ubbens, Qi Tang, Subao Jiang, Yue Ruan, Kenneth G. Macleod, Sebastian Steven, Thomas Berkemeier, Ulrich Poeschl, Jos Lelieveld, Hartmut Kleinert, Alex von Kriegsheim, Andreas Daiber, Thomas Muenzel
Summary: Up to 8.8 million excess deaths per year worldwide are attributed to air pollution and traffic-related noise. Both factors have significant impacts on cardiovascular, metabolic, and neuropsychiatric health outcomes. Further research on the combined exposure is urgently needed.
Article
Chemistry, Multidisciplinary
Miguel Paez-Perez, Aurimas Vysniauskas, Ismael Lopez-Duarte, Eulalie J. J. Lafarge, Raquel Lopez-Rios De Castro, Carlos M. M. Marques, Andre P. Schroder, Pierre Muller, Christian D. D. Lorenz, Nicholas J. J. Brooks, Marina K. K. Kuimova
Summary: Lipid peroxidation plays a crucial role in cell signaling, diseases, and therapy. The authors employed advanced microscopy, X-ray diffraction, and molecular simulations to directly measure the changes in bilayer structure and viscoelastic properties upon peroxidation of lipid membranes.
COMMUNICATIONS CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Meng Li, Yelena Kan, Hang Su, Ulrich Poschl, Sapun H. Parekh, Mischa Bonn, Yafang Cheng
Summary: Acidity is crucial for atmospheric aerosol formation and its impacts on air quality, climate, and the ecosystem. This study directly measures the pH distribution in NaH2PO4-Na2HPO4 microdroplets and finds that the pH values of the microdroplets are similar to the parent bulk solutions and remain constant across the microdroplets. Similar results are observed for acidic NaHSO4 microdroplets.
Article
Environmental Sciences
Susannah Ripley, Dong Gao, Krystal J. Godri Pollitt, Pascale S. J. Lakey, Manabu Shiraiwa, Marianne Hatzopoulou, Scott Weichenthal
Summary: This study aimed to investigate whether within-city spatial variations in the oxidative potential of fine particulate air pollution (PM2.5) modify the relationship between oxidant gases and cardiovascular mortality. The results showed that spatial variations in PM2.5 oxidative potential were associated with an increased risk of cardiovascular mortality. Regions with elevated oxidative potential of O-x and PM2.5 may be priority areas for interventions to decrease the population health impacts of outdoor air pollution.
ENVIRONMENTAL EPIDEMIOLOGY
(2023)
Editorial Material
Engineering, Environmental
Manabu Shiraiwa
ACS ENVIRONMENTAL AU
(2023)
Article
Engineering, Environmental
Ashmi Mishra, Steven Lelieveld, Ulrich Poeschl, Thomas Berkemeier
Summary: Exposure to ambient air pollution can lead to oxidative stress and damage in the respiratory tract. This study investigates the chemical modification of proteins by reactive species from air pollution and biological sources. Fine particulate matter and nitrogen dioxide synergistically increase the formation of a biomarker of oxidative stress, nitrotyrosine. Ozone affects the antioxidant defense system but does not significantly influence nitrotyrosine concentration.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Florence K. A. Gregson, Nealan G. A. Gerrebos, Meredith Schervish, Sepehr Nikkho, Elijah G. Schnitzler, Carley Schwartz, Christopher Carlsten, Jonathan P. D. Abbatt, Saeid Kamal, Manabu Shiraiwa, Allan K. Bertram
Summary: Smoke particles generated by burning biomass contain two organic phases with different viscosities dependent on relative humidity. This can have implications for reaction kinetics and cloud formation in the atmosphere, as well as increase the atmospheric lifetime of brown carbon and its predicted warming effect on climate.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Meteorology & Atmospheric Sciences
Aishwarya Singh, Subha S. Raj, Upasana Panda, Snehitha M. Kommula, Christi Jose, Tianjia Liu, Shan Huang, Basudev Swain, Mira L. Poehlker, Ernesto Reyes-Villegas, Narendra Ojha, Aditya Vaishya, Alessandro Bigi, R. Ravikrishna, Qiao Zhu, Liuhua Shi, James Allen, Scot T. Martin, Gordon McFiggans, Meinrat O. Andreae, Ulrich Poeschl, Hugh Coe, F. Bianchi, Hang Su, Vijay P. Kanawade, Pengfei Liu, Sachin S. Gunthe
Summary: The COVID lockdown in India provided an opportunity to study anthropogenic emissions under cleaner conditions. Measurements of CCN activity and aerosol composition during the lockdown revealed an episodic event caused by meteorological conditions. This event was characterized by rapid growth and high hygroscopicity of aerosol particles from a coal-fired power plant, which had high cloud-forming potential. Studying CCN properties under cleaner conditions helps to understand the contributions of different emission sectors and their impact on climate forcing.
NPJ CLIMATE AND ATMOSPHERIC SCIENCE
(2023)
Article
Meteorology & Atmospheric Sciences
Dimitrios Bousiotis, Gordon Allison, David C. S. Beddows, Roy M. Harrison, Francis D. Pope
Summary: Successful air quality management and control require not only measurements of pollution levels, but also identification of pollution sources and their relative importance. This paper presents a significant breakthrough in the use of low-cost techniques for source apportionment. By using low-cost sensor measurements along with statistical methods, the main sources of pollution at three important sites were successfully identified and quantified. The analysis provides crucial information for cost-effective air quality management and control.
NPJ CLIMATE AND ATMOSPHERIC SCIENCE
(2023)
Article
Environmental Sciences
Talib Manshur, Carlo Luiu, William R. Avis, Vera Bukachi, Michael Gatari, Joe Mulligan, David Nganga, Jonathan Radcliffe, Ajit Singh, Ezequiel Waiguru, Amos Wandera, Francis D. Pope
Summary: This study investigates the feasibility of using a citizen science approach for air quality monitoring and explores the opportunity of addressing the increasing air pollution issue through the use of low-cost sensors. A community engagement workshop revealed that participatory approaches are effective in increasing awareness of air pollution and its health implications, as well as empowering the community to address local issues and advocate for solutions. In the context of transport infrastructure development in African cities, this approach can be utilized to collect data and monitor the impacts of air pollution during and after road construction.
CITY AND ENVIRONMENT INTERACTIONS
(2023)
Article
Environmental Sciences
Sophie A. Mills, Jose M. Maya-Monzano, Fiona Tummon, Rob MacKenzie, Francis D. Pope
Summary: Pollen is a global issue, affecting 40% of the population with hay fever and allergies. Current monitoring techniques are either time-consuming or expensive, so alternative methods are needed for timely and localized pollen concentration information. By using machine learning on Optical Particle Counter (OPC) data, we have shown that low-cost OPC sensors can estimate pollen concentrations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Materials Science, Biomaterials
Rokas Zvirblis, Karolina Maleckaite, Jelena Dodonova-Vaitkuniene, Dziugas Jurgutis, Rugile Zilenaite, Vitalijus Karabanovas, Sigitas Tumkevicius, Aurimas Vysniauskas
Summary: This paper reports new polarity sensitive BODIPY probes that can distinguish between liquid-ordered and liquid-disordered phases and can internalise into lipid droplets of live cells. The probes sense lipid environment through the change in the fluorescence lifetime of their monoexponential decays, making them convenient for fluorescence lifetime imaging microscopy. The probes have high sensitivity to the polarity of lipid droplets.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Environmental Sciences
B. J. Finlayson-Pitts, A. Anderson, P. S. J. Lakey, W. Wang, M. J. Ezell, X. Wang, L. M. Wingen, V. Perraud, M. Shiraiwa
Summary: Neonicotinoids (NNs) are commonly found throughout the environment and are present on surfaces such as seeds, soil, vegetation, and dust particles. However, little is known about their kinetics and oxidation products when exposed to the atmosphere. In this study, the OH oxidation of three solid NNs (imidacloprid, dinotefuran, and clothianidin) was investigated using in situ attenuated total reflectance (ATR) FTIR spectroscopy. The results showed that the initial lifetimes of NNs with respect to OH were approximately 10-17 days. These findings emphasize the importance of considering the reactions of NNs and their photodegradation products with OH in assessing their environmental impacts.
ENVIRONMENTAL SCIENCE-ATMOSPHERES
(2023)
Article
Chemistry, Multidisciplinary
Alexander M. Prophet, Kritanjan Polley, Gary J. Van Berkel, David T. Limmer, Kevin R. Wilson
Summary: The oxidation kinetics of iodide by ozone at the air-water interface is studied in single microdroplets. Molecular simulations and kinetic modeling are used to understand the underlying multiphase mechanism.
Article
Chemistry, Multidisciplinary
Rong Zhang, Jiajing Lan, Fei Wang, Shumei Chen, Jian Zhang
Summary: By utilizing 1,1'-ferrocene dicarboxylic acid as a chelating and surface protection ligand, we have synthesized multi-nuclear indium oxide clusters with varying nuclear sizes, including heptanuclear and thirteen-nuclear clusters. These clusters possess labile coordination sites, allowing for structural modification and self-assembly, resulting in the formation of various cluster structures.
Article
Chemistry, Multidisciplinary
Hui Wang, Hui Liu, Mingsen Wang, Jiaheng Hou, Yongjun Li, Yuancheng Wang, Yingjie Zhao
Summary: Two supramolecular complexes were prepared using CBs and M1, and their single-crystal structures were analyzed by SCXRD. The unexpected 1:2 self-assembly structure between M1 and CB[8] was discovered for the first time. These complexes exhibit unique photophysical properties and provide valuable information about the structure and photophysical properties of supramolecular complexes.
Article
Chemistry, Multidisciplinary
Chang-Hee Lee, Sookil Park, Sanggil Kim, Ji Young Hyun, Hyun Soo Lee, Injae Shin
Summary: The epidermal growth factor receptor (EGFR) is a cell-surface glycoprotein involved in cell proliferation and tumor development. This study used a fluorescently labeled EGFR to investigate its time-dependent endocytosis in live cells and found that appended glycans affect EGFR internalization. Additionally, the study detected sialic acid residues attached to EGFR on the live cell surface using FRET-based imaging. This research provides valuable insights into the cellular functions of EGFR.
Article
Chemistry, Multidisciplinary
Subhankar Sahu, Lokesh Kumar, Sumita Das, Dipti Gupta, Ruchi Anand
Summary: This study proposes a strategy that combines organic electronics with biosensor scaffolds to create a compact device for monitoring environmental aromatic pollution. By coupling biosensing protein MopR with an organic electrochemical transistor (OECT), a sensor module capable of efficient detection of phenol was designed. Exclusive phenol detection with minimal loss of sensitivity could be achieved in complex pollutant mixtures and real environmental samples.
Review
Chemistry, Multidisciplinary
Changseok Lee, Hyung-Joon Kang, Sungwoo Hong
Summary: The formation of C-N bonds through hydroamination reactions catalyzed by nickel hydrides has been a topic of recent interest. This approach offers a way to efficiently transform a variety of alkene and alkyne substrates into compounds enriched with C-N bonds. The review provides a concise overview of the underlying reaction mechanisms and aims to stimulate further progress in NiH-catalytic techniques and catalyst design.
Article
Chemistry, Multidisciplinary
Yueci Wu, Lu-Lu Sun, Hai-Hao Han, Xiao-Peng He, Weiguo Cao, Tony D. James
Summary: Drug-induced liver injury (DILI) is a common cause of acute liver failure in the USA and Europe, but most cases can be recovered or prevented by discontinuing the offending drug. Recent research has found that peroxynitrite (ONOO-) can be used as a potential indicator for early diagnosis of DILI, and there is an urgent need to establish a method to detect and track peroxynitrite in DILI cases. In this study, a FRET-based nano fluorescent probe CD-N-I was developed, which showed high selectivity and sensitivity in detecting peroxynitrite. The probe successfully detected exogenous peroxynitrite in live cells and endogenous peroxynitrite in APAP-induced liver injury of HepG2 cells.
Article
Chemistry, Multidisciplinary
Dmitry L. Lipilin, Mikhail O. Zubkov, Mikhail D. Kosobokov, Alexander D. Dilman
Summary: This article describes a direct photocatalytic method for the thiolation of unprotected acids, which was previously challenging. By using a thionocarbonate reagent with an N-O bond, the efficient conversion of carboxylic acids to thiols is achieved.
Article
Chemistry, Multidisciplinary
Jason Malenfant, Lucille Kuster, Yohann Gagne, Kouassi Signo, Maxime Denis, Sylvain Canesi, Mathieu Frenette
Summary: Raman microscopy can reveal compound-specific vibrational fingerprints without sample preparation. The combination of efficient theoretical calculations and a user-friendly software can accurately predict peak positions and provide match scores to assist with structure determination.
Article
Chemistry, Multidisciplinary
Jayoh A. Hernandez, Paul S. Micus, Sean Alec Lois Sunga, Luca Mazzei, Stefano Ciurli, Gabriele Meloni
Summary: Essential trace metals play crucial roles in the survival and virulence of bacterial pathogens. Helicobacter pylori requires nickel for colonization and persistence in the stomach, and NixA is an essential nickel transporter in this process. This study characterizes the selectivity and electrogenic nature of NixA-mediated nickel transport.
Article
Chemistry, Multidisciplinary
Tarali Devi, Kuheli Dutta, Jennifer Deutscher, Stefan Mebs, Uwe Kuhlmann, Michael Haumann, Beatrice Cula, Holger Dau, Peter Hildebrandt, Kallol Ray
Summary: This study emphasizes the importance of subtle electronic changes and secondary interactions in the stability of biologically relevant metal-dioxygen intermediates. It also shows that the role of the chloride ligand in stabilizing the Fe-III-(OOBu)-Bu-t moiety can extend to other anions, including the thiolate ligand.
Article
Chemistry, Multidisciplinary
Jacqueline R. Santhouse, Jeremy M. G. Leung, Lillian T. Chong, W. Seth Horne
Summary: By studying the folding kinetics and mechanism of the BdpA sequence, researchers found that altering the backbone connectivity can affect protein folding. This suggests that protein mimetic chains have a significant degree of plasticity in transitioning between unfolded and folded states.
Article
Chemistry, Multidisciplinary
Divanshu Gupta, Ralf Einholz, Holger F. Bettinger
Summary: This study presents the first direct spectroscopic evidence of a cyclic seven-membered iminoborane. Compared to linear amino-iminoboranes, this cyclic iminoborane exhibits weakened bond strength and lower Lewis acidity value. The study suggests that the reduced ring strain of cyclic iminoborane prevents nitrogen fixation but allows facile (2 + 2) cycloaddition reaction with C2H4.
Article
Chemistry, Multidisciplinary
Renny Mathew, Aniruddha Mazumder, Praveen Kumar, Julie Matula, Sharmarke Mohamed, Petr Brazda, Mahesh Hariharan, Brijith Thomas
Summary: This study reveals the packing arrangement of partially disordered nitro-perylenediimide (NO2-PDI) using a synergistic approach that combines 3D ED, ssNMR, and DFT techniques. By overcoming these challenges, this methodology opens up new avenues for material characterization, driving exciting advancements in the field.